<template>
	<view class="goods-detail-container ">
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
		    <image @click="preview(i)" :src="item.pics_big"></image>
		  </swiper-item>
		</swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box"  v-if="goods_info.goods_name" >
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费 =={{total}}</view>
    </view>
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 底部区域 -->
    <uni-goods-nav @click="onClick" @buttonClick="buttonClick"  class="goods_nav" :options="options" :button-group="buttonGroup"  />
	</view>
</template>

<script>
  import { mapMutations,mapGetters } from 'vuex'
	export default {
		data() {
			return {
          // 商品详情对象
          goods_info: {},
           // 左侧按钮组的配置对象
          options: [{
            icon: 'shop',
            text: '店铺'
          }, {
            icon: 'cart',
            text: '购物车',
            info: 0
          }],
          // 右侧按钮组的配置对象
          buttonGroup: [{
              text: '加入购物车',
              backgroundColor: '#ff0000',
              color: '#fff'
            },
            {
              text: '立即购买',
              backgroundColor: '#ffa200',
              color: '#fff'
            }
          ]
			};
		},
    onLoad(options) {
      // 取出商品ID
      const goods_id = options.id
      // 调用方法
      this.getGoodsDetail(goods_id)
    },
    computed:{
      ...mapGetters('m_cart',['total'])
    },
    watch:{
      // 监听购物车数量的变化
      total:{
        handler(newVal){
          let findResult = this.options.find(item=>item.text === '购物车')
          findResult.info = newVal
        },
        immediate:true
      }
    },
    methods: {
      ...mapMutations('m_cart',['addToCart']),
      // 获取商品详情数据的方法
      async getGoodsDetail(goods_id) {
        // 1 发送请求
        const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id })
        // 2. 错误处理
        if(res.meta.status !==200) return uni.$showMsg()
        // 3. 加工处理数据
        //  <img
        // <img style=\"display:block\"
        res.message.goods_introduce = res.message.goods_introduce.replaceAll('<img','<img style=\"display:block\"')
        res.message.goods_introduce = res.message.goods_introduce.replaceAll('.webp','.jpg')
        // 4. 成功赋值
        this.goods_info = res.message
      },
      // 预览图片
      preview(i){
        // 预览的api
        uni.previewImage({
          current:i,  // 当前预览哪一个
          urls: this.goods_info.pics.map(x=>x.pics_big)
        })
      },
      // 底部操作图标点击事件
      onClick(event){
         if(event.content.text === '购物车'){
           uni.switchTab({
             url:'/pages/cart/cart'
           })
         }
      },
      // 底部操作按钮点击事件
      buttonClick(event){
        if(event.content.text === '加入购物车'){
          this.addToCart({
            goods_id: this.goods_info.goods_id,       // 商品的Id
            goods_name: this.goods_info.goods_name,   // 商品的名称
            goods_price: this.goods_info.goods_price, // 商品的价格
            goods_count: 1,                           // 商品的数量
            goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
            goods_state: true                         // 商品的勾选状态
          })
          this.$store.commit('m_cart/saveToStorage')
        }
      }
    },
	}
</script>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
}
// 商品信息区域的样式
.goods-info-box {
  padding: 10px;
  padding-right: 0;

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
      padding-right: 10px;
    }
    // 收藏区域
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }

  // 运费
  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
}

.goods-detail-container {
  // 给页面外层的容器，添加 50px 的内padding，
  // 防止页面内容被底部的商品导航组件遮盖
  padding-bottom: 50px;
}

.goods_nav {
  // 为商品导航组件添加固定定位
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
</style>
